Review of extra-embryonic tissues in the closest arthropod relatives, onychophorans and tardigrades

Treffkorn, Sandra; Mayer, Georg; Janßen, Ralf

doi:10.1098/rstb.2021.0270

Cited by 6 publications

(5 citation statements)

References 99 publications

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“…We note the placement of Tardigrada in our phylogeny is next to Nematoda which is in disagreement with the currently accepted view that they should be closer to Arthropoda 90 . This is likely an artefact due to lack of public outgroup data 91 , 92 , and has no downstream consequences for our analyses.…”

Section: Methodscontrasting

confidence: 99%

The MetaInvert soil invertebrate genome resource provides insights into below-ground biodiversity and evolution

Collins,

Schneider,

Boštjančić

et al. 2023

Commun Biol

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Soil invertebrates are among the least understood metazoans on Earth. Thus far, the lack of taxonomically broad and dense genomic resources has made it hard to thoroughly investigate their evolution and ecology. With MetaInvert we provide draft genome assemblies for 232 soil invertebrate species, representing 14 common groups and 94 families. We show that this data substantially extends the taxonomic scope of DNA- or RNA-based taxonomic identification. Moreover, we confirm that theories of genome evolution cannot be generalised across evolutionarily distinct invertebrate groups. The soil invertebrate genomes presented here will support the management of soil biodiversity through molecular monitoring of community composition and function, and the discovery of evolutionary adaptations to the challenges of soil conditions.

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Section: Methodscontrasting

confidence: 99%

The MetaInvert soil invertebrate genome resource provides insights into below-ground biodiversity and evolution

Collins,

Schneider,

Boštjančić

et al. 2023

Commun Biol

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show abstract

“…We note the placement of Tardigrada in our phylogeny is next to Nematoda which is in disagreement with the currently accepted view that they should be closer to Arthropoda 92 . This is likely an artefact due to lack of public outgroup data 93,94 , and has no downstream consequences for our analyses.…”

Section: Improving Metatranscriptomic Assignmentscontrasting

confidence: 99%

MetaInvert: A new soil invertebrate genome resource provides insights into below-ground biodiversity and evolution

Collins

Schneider

Boštjančić

et al. 2023

Preprint

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Soil invertebrates are among the least understood metazoans on Earth. Thus far, the lack of taxonomically broad and dense genomic resources has made it hard to thoroughly investigate their evolution and ecology. With MetaInvert we provide draft genome assemblies for 232 soil invertebrate species, representing 14 common groups and 94 families. We show that this data substantially extends the taxonomic scope of DNA- or RNA-based taxonomic identification. Moreover, we demonstrate that theories of genome evolution cannot be generalised across evolutionarily distinct invertebrate groups. The soil invertebrate genomes presented here will support the management of soil biodiversity through molecular monitoring of community composition and function, and the discovery of evolutionary adaptations to the challenges of soil conditions.

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“…Indeed, in arthropods, the so-called extraembryonic tissues (sensu lato) are involved in providing immune response (recently reviewed in e.g. [ 143 , 184 ]. In-situ hybridization shows that the three top markers of this cluster all exclusively are expressed in cells underlying the germ band (and possibly also the dorsal field and ventral sulcus), and thus the cells/tissue that connects the developing embryo (sensu stricto) with the yolk (Fig.…”

Section: Resultsmentioning

confidence: 99%

Single-cell RNA sequencing of mid-to-late stage spider embryos: new insights into spider development

Medina-Jiménez,

Budd,

Janssen

2024

BMC Genomics

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Background The common house spider Parasteatoda tepidariorum represents an emerging new model organism of arthropod evolutionary and developmental (EvoDevo) studies. Recent technical advances have resulted in the first single-cell sequencing (SCS) data on this species allowing deeper insights to be gained into its early development, but mid-to-late stage embryos were not included in these pioneering studies. Results Therefore, we performed SCS on mid-to-late stage embryos of Parasteatoda and characterized resulting cell clusters by means of in-silico analysis (comparison of key markers of each cluster with previously published information on these genes). In-silico prediction of the nature of each cluster was then tested/verified by means of additional in-situ hybridization experiments with additional markers of each cluster. Conclusions Our data show that SCS data reliably group cells with similar genetic fingerprints into more or less distinct clusters, and thus allows identification of developing cell types on a broader level, such as the distinction of ectodermal, mesodermal and endodermal cell lineages, as well as the identification of distinct developing tissues such as subtypes of nervous tissue cells, the developing heart, or the ventral sulcus (VS). In comparison with recent other SCS studies on the same species, our data represent later developmental stages, and thus provide insights into different stages of developing cell types and tissues such as differentiating neurons and the VS that are only present at these later stages.

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Review of extra-embryonic tissues in the closest arthropod relatives, onychophorans and tardigrades

Cited by 6 publications

References 99 publications

The MetaInvert soil invertebrate genome resource provides insights into below-ground biodiversity and evolution

The MetaInvert soil invertebrate genome resource provides insights into below-ground biodiversity and evolution

MetaInvert: A new soil invertebrate genome resource provides insights into below-ground biodiversity and evolution

Single-cell RNA sequencing of mid-to-late stage spider embryos: new insights into spider development

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